Refillable lubricating-cup



H. H. WILLIAMS.

REFILL/ISLE LUBRICATING CUP.

APPLICATION FILED MAH. I0, |920.

1,389,405. Patented Aug. 30, 1921.

2 SHEEISMSHEEI 2.

UNTED STATES HERBERT H. WILLIAMS, OF BROOKLYN, NEW YORK.

.REFLLABLE LUBRICATING-CUP.

Application filed March 10, 1920.

To all fic/lem t may concern.'

Be it known that l. Hnnnnnr H. vWILLIAMS, a citizen of the -United States, and a resident of the citvY of Brooklyn, county of Kings, and State ot New York, have invented an improvement in Refillable Lubricating- Cups', of which the following is a specification.

rlhis invention relates to grease cups and grease kguns such as are used iior forcing grease and other lubricants into the bearings of machinery, and more particularly this invention relates to refillable lubricating devvices of the above mentioned type.

An object of this invention is to provide a readily reiillable grease gun or grease cup ot' simple construction and efficient action.

Another object of this invention is to provide a construction of the above mentioned character in which the disadvantages accompanying' the manual refilling ot grease cups, for example, are avoided and iu which the lubricating cup or gun may be readily and quickly recharged without the necessity of manually handling the grease or other lubricant itself. t -'.Anotlier obgect is to provide a container tor grease that may be convenientlyr inserted lin a grease cup and to provide means 't'or properly alining.T and retaining1 in alineinent with the piston the inserted container.

Another object is to provide a container for insertion in a lubricating device so constructed-that use of a Separate piston individual to the container itself is avoided and that a single piston toi-ruinsY part oi' the grease cup or grease gun may be used to operate directly upon the contents ot the container.

Other objects will be in part obvious or in part pointed out hereinafter.

The invention accordingly consists in the features ot (onsti'uetion, combinations of elements and arrangement oi parts which will be exemplified in the structure hereinafter descrihed and the scope ot the applicabe indicated in the aplawines, in which are shown several preferred embodiments ot' this invention by way of example and in which like retorence characters reicr to similar parts throughout9 Figure l is a side elevation partly in sec- Specification of Letters Patent.

atciited Aue. titi, i921. Serial No. 364,617.

` tion of a grease cup with .inserted and alined container, and

Fig. 2 is a side elevation o't` the container parti)r in section adapted for use with the grease cup ont Fig. l,

Fig. 53 is a sectional View ot and Fig. 4. is a side elevation, partly in section and with certain parts broken away, of a container used in connection with the grease gun in Fig. 3, and

Fig'. 5 is a side elevation, partly in section, ot' a modified form of grease gun,

Fig. 6 is a sectional view, with certain parts broken away, of a grease nuii or grease cup illustrating,r another embodiment of this invention, and

Fig. 7 is an enlarged detail tain features ol construi-tion of nient illustrated in Fig. 6.

Referring to the drawings and ii'iorc particularly to Fig. l, there shown a grease cup l0 provided at its lower end with an extended threaded portion or nipple 1 1 and :i s/piarc or .hexagonal 'Shank i2 'for attachine and screwing the grease cup into the luishinnl or bearing member desired to be lubricated. Extending through the nipple ll is a passage 13 for conductingl the ,grease the bearing, this pasoi' other lubricant to sagre 13 being provided at its upper end with a substantially cylindrical section i4 'lor a purpose to be hereinafter described. At the upper end of the cup i0 there, is a thread l5 cut upon au enlarged reinforcing collar portion extending' circuin erentially ot the upper end 'if the cup l0. 'The threaded portion l5 is adapted to receive a cap 1G threaded interi illy or engagement with the thread l5 of the cup l0 and with a circumiierentially extending shoulder 17 for abutting against the face oi the upper end ot the @up l0. The cap i6 is provided at its central portion with a r-illiir i8 integral therewith and internall.' threaded to receive. the threaded piston rod 19 provided at its upper and outer extremity with a handle. such as the handle .20 ot' Fig. 3. 'for manual manipulation. At its lower end and extending within the cap lli. thc threaded piston rod i9 has screwed upon it a washer 2l forming the Supporting hack for a vasher i'ii'eterahly oi leather, and turned downwardly at its eirrurriterence as at 23 for a purpose to be hereinafter devie w ot certhe einbodiscribed. The diameter of the washer 21 is slightly less than the maximum outside di ameter of the leather washer 22 to provide sufficient clearance as will be made clear hereinafter. rlhe washer 22 is securely held in place by means of a washer 24. preferabl also threaded upon the threaded piston ro 19 and tightly screwed up against the leather washer 22, the two threaded washers 21 and 24 being securely lockedrin assembled relation by means of a lock nut 25 threaded upon. the lower end of the threaded rod 19. In Fig. 2' is shown a container 26 oit' inex pensive sheet metal and provided at its lower end with a tubular extension 27 adapted to tit snugly within the cylindrical portion 14 of the passage 18 of the cup 10. At its upper end the container 26 is pro vided with threads 28 formed by rolling the sheet metal of the container 26 itself into the thread as is clearly shown in Fig. 2. The container 26 is closed at its lower tubular extension 27 by means of a cap 29 and upon being filled with grease or other lubricant is closed at its upper end by means of a cap 30 likewise provided with threads and screwed upon the threaded portion 28 of the con-` tainer 26. In this manner the grease is preferably commercially put up or dispensed and the container is then placed in operative relation to the several parts of the cup l0. The cap 30 is first removed from the con tainer and the cap 16 of the grease cup, after being removed from the grease cup 10, is screwed onto the upper end of the container 26, the threads 28 of the container engaging the interiorly threaded portion 3l oi the cap 16. The cap 29 is then removed from the tubular extension 27 of the container 26 and the container inserted within the cup 10, its diameter being slightly less than the interior diameter of the cup 10, and the cap 16 is thereupon screwed onto the upper end of the grease cup 10. The threaded portions 15 and 31 are preferably threaded in the same nianner, for example, right handed.

Upon the insertion of the container with in the cap 16, the piston, comprisime,` principally a leather washer 22 and its associated. parts, being first withdrawn to its uppermost position within the cap 16, enters the upper part of the container 26, the diameters of the leather washer 22 beingsubstantially equal. to the interior diameter of the container 26, and the washer 21 being of slightly less diameter to provide for a substantial clearance between itself and the walls of the container 26. The parts having been assembled, in order to cause the lubricant within the container to enter the bearing or other part of the machinery desired to be lubricated, the piston rod 19 is rotated manually to cause descent of the piston within the container 26 whereupon the grease or other lubricant is torced out through the tuassesses buter extension 27 at the lower end of the container and through the passage 13 to the bearing. The piston is free properly to maine` this descent since the container 26 within which the piston operates is properly alined and maintained in alinernent withY the piston at its lower end by means ofthe eXe .y tension 26 exnding within and snugly titv ting the cylindrical portion 14 and at its upper end by means of the threaded portion 28 engaging the threaded ,portion 8l of the cap 16.

In Figs. 3 and 4 is shown another embodi ment oi this invention as applied particularly to a lubricating device of the grease gun type. lt will be noted that in this construction there is a cylindrical shell 82 provided with integral threaded collars 33 and 34s at its upper and lower ends respectively. Threaded to the upper collar 33 is a cap 35 with an interior eircumferentially en tending shoulder 36 and with a central collar portion 3f( interiorly threaded to receive the threaded piston rod 38 at theupper end of which is the handle 20. At the lower end of the rod 38 a leather washer 39 is secured. thereto between the supporting1 washer 4:0 and the washer il loosely mounted upon `the threaded rod 38 and securely locked together and in position by means of loch-nuts Li2 and e3.

At the lower end of the cylinder 82 there is threaded upon the collar 3ft a base portion la intcriorly threaded as at 45 and provided. with an opening i6 of reduced section at the lower end thereof. A nozzle e? is screwed to the base portion 44e by rneansot the threads d8 to form an extended passage 49,015 suitable length for discharging the grease or lubricant.-

The shell 32 is adapted to receive a corn tainer 50, more clearly shown in Fig. t, having at its lower end a threaded extension 5,1. onto which is screwed a cap 52 for closing;

the lower end of the container and provided at its upper end with a flange 53 extending' outwardly and circuiniierentially of the con! tainer. The container when filled with grease or lubricant is closed at its upper end by means of a cap 54 tit-ted thereto. The container 50, after the removal of the caps 52 and 54, is inserted into the shell 32, the cap 35 having been previously removed or unscrcwed 'from the threaded collar portion and the piston having been withdrawn to its uppermost position well within the cap 85. The container 50 is thereupon rotated so that the threaded extension 5 1 thereof is securely screwed into the threaded portion 45 of the base member de until the flange 53 is brought to bear upon the upper end face of the shell 32. The cap 35 with its assoelated piston is thereupon put into position and screwed'ento'the collar portion 33, the piston entering the container 50 and the 4correspond with Fig. 3.

shoulder 36 of the cap 3:3 securely clampingrgr the flange 53 between itself and the upper end face of the shell 32. The container 5G is thus positively and properly alined with the piston and securely held in position within the grease run, whereupon a dis charge of grease or lubricant through the passage 49 is caused to take place by manually rotating and advancing the piston Within the container by means of the handle 20 and the threaded piston rod 38.

In Fig. 5 is illustrated a grease gun cornprising a main shell 55 into the lower end of which is threaded a nozzle 56 provided with a passage 57 the upper end oi which is provided with a substantially cylindrical section 58 for a 1^ irposc to be hereinafter described.

The upper end of the shell 55 is reinforced to provide a collar 59 threaded on its exterior surface to receive the interiorly threaded cap and handle G0 which has a greater inte rior diameter than the exterior diameter of the shell At the interior of the upper end of shell v55 there is a female thread Eil adapted to receive the upper threaded portion Q8 of the container 26, of similar Construct-ion as that .shown in Fig; 2, and the lower reduced extension 27 of which is received by and lits snugly Within the cylindrical section 5B in the upper end of the nozzle 56. The container 26 is inserted into the shell and securely screwed therein, whereby the upper threaded portion 28 and the lower extension 27 coperating with the female thread Gl and the cylindrical section 58 of the nozzle 56 respectively properly aline the container 26 with the piston indicated as 4at G2 rigidly mounted upon the lower end of a piston rod-63 rigidly :indecen- Itrally secured to the interior of the upper lubricant is forced end of the cap G0. The

of the nozzle 56 by through the passage 57 rotating the combined handle and cap 60, whereby the cap and its associated piston is advanced downwardly.

Fig. 6 shows a modified form of this invention wherein the cap 64 threaded onto theshell G5 is provided with an interiorly and oircumterentiallv extending shoulder or bead 66,' this shoulder extendingdownwardly from the upper interior part of the cap to provide a conical centerin or abutting surface as will he more cleary described hereinafter. The cap (Se is furthermore provided with a piston rod 558 and associated iston parts of substantially similar construction as shown in Fig. 3 and numbered in Fig. 6 to The shell G5 is adapted to receive aecontainer 6'?, the lower alining members or which .may be constructed as shown in Fig. 2 or as siiown in Fig. 4, the shell having a corresponding construction at its lower end. As illustreted in Fig. (i and in greater enlarged View of 7). certain. broken away for purposes o ness, the container tll' is subs dricnl througlioutits upper extreme upper end is adapted Ao `l` by the conical centerinlr or ehu 1i" der 65 oi the'cap 64;,- or pil the upper end of" the container" ton. As the cap Gel is screwed ing or shell G5, the shoulder or be its exterior conical surface, ente end of the container and prop maintains in proper alinei end of the container with lower end o?? the container proper alinement by either ol. shown in 2 or It will be noted that there has beer vided in this invention a readil grease gun or grease cup, which is maintained in pro with the piston of the grens i un and which container it is not neces n. iw

provide with a separate pieton to the container, the p grease cup or grens gun or upon the contents ci? the pro f tainer. It will be :furthe severe] objects well attained and that been achieved.

It. will be particularly noted. that several niodil'ications illustrated; u alinement ol'I the container with t? obtained by providing the two :dining elements, one nl' threaded, thus preventing loi nient of the container .ich rc' main casing'` and the other of miic to hold the container in 'place li ment of a portion ot' the contini. port-ion oi"- thc main casing, Wh alining element may serre to prevent ri tive lat-eral movement between the mail" and the main casing. The centrali-ier is positively secured within the cas-inw all times held in proper aliiwnuvit piston.

llt will also be clear that ot the container may, il' de" tact with the interior sur ic` casing,` the outside diameter beingmade suiiici tly ler diameter o' the casing; in a substantially snug lit o'th in the casing, so that `the tainer within the easing' ina stantial degree in nLintaininp in proper alim-ment with the it 'may be `feasible to depend such manner olI zilinciueidz., l' dispense entirely wth theend bers hereinbeiore described i l il li ald matter herein set 'forth valini'ing one end .its upper end. to.

yhave the. casing assist the end alining memtion-.With respect to the piston.

Aswarious ossible embodiments may be made "in the a ove invention and as various 1 changes might be made in the embodiment forth it is to be understood that or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

l ciaim: f

l. in a device of the class described, in combination, a main casing provided at its upper end with a removable cap, a piston mounted in said cap, `a container for insertion into said casing, threaded means for oi said container with said within said casing, a circular extenthe other end oit said container conerating surface of the casing for aiming .e other end ot-saidvcontainer with said piston, and means for advancing said piston. into said alined container.,

2. in a device above set piston sion at tacting with a co d E of the class described., in

, combination, a main casing, a. removablecap mounted at the upper end of said casing, a pistr'inv mounted in said cap and having a lesser diameter than the inside diameter of said casing., a container for insertion into said casing independently of said piston and having an outside diameter less than the inside diameter ot said casing and an inside diameter substantially equal to the diameter oi said piston, said container being open at ermit entry of said piston therein, means 'or alining said container with said piston, and means for advancing said ist/on into the container.

3. iin a device of the class described, in combination, a main casing, a removable cap mounted at the upper end of said casing and provided with an internal thread, a container for insertion into said casing provided with a threaded portion at its upper end ior engagement with said internal thread of said cap, a piston mounted in said cap having a diameter substantially equal to the inside diameter of said. container, means for aiming the lower end of said container with said piston, and means for advancing said piston into said container.

il. .in a device of the class described, in combination, a main casing having at its lower end a cylindrical recess terminating in a tubular' passage, a container or insertion into said casing, a removable cap mounted at the upper end of said casing, a piston mounted in said cap, means forsecuring the upper end of said container within said cap and for alining said upper end with said piston, a tubular extension at the lower end of said container adapted to be received by said cylindrical recess in said casing for alining the lower end osaid coni. insonne tainer with said piston, and means for advancing said piston into said container.

5. In a device of the class described, in combination, a main casing having at its lower end a substantially cylindrical opening, a removable cap mounted at the upper end of said casing, said cap being provided with an internally'threaded portion, a container forinsertion into said casing having at its upper end a threaded portion for en gagement with said threaded portion of said cap and having at its lower end a tubular extension for engagement With said. cylindiical opening in said casing, a iston mounted upon said removable cap an having a diameter substantially equal to the inside diameter of said container, and means for advancing said piston into said container. i

6. In a device oi the class described, in combination, a main casing having at its lower end a cylindrical opening, a removable cap adapted to be mounted upon the upper end of said casing, a piston mounted on said cap a container for insertion into said casing aving an inside diameter substantially equal to the diameter of said piston, a tubular extension at the lower vend of said container to be received by said cylin drcal opening in said casing for alining the lower end of said container with said piston, means Afor securing the upper end of said casing within said removable cap, means for securing said cap to said casing whereby the upper end of said container is alined with said piston, and means for advancing said piston into said container.

7. Ina device of the class described, in combination, a sheet metal container of substantially cylindrical form having a threaded portion at one end thereof, a threaded cap adapted to be screwed onto said threaded portion to close said one end of said container, a tubular extension of lesser diameter than said container at the other end thereof, and a cap for closing said tubular extension.

8. Ina device of the class described, in combination, a main casing provided at its iower end with a tubular exit passage, a removable cap mounted at the upper end oi' said casing, a piston mounted in said cap and having a lesser diameter than the inside diameter ot said casing, a container for insertion into said casing adapted to fit #snugly therein and having an inside diameter substantially equal to the diameter of said piston, an opening in the bottom of `said container adapted to register with said tubular exit passage in said casing, and 

